Pinning construction for universal joint



United States Patent PINNING CONSTRUCTION FOR UNIVERSAL JOINT George B.Stillwagon, Jr., Dayton, Ohio, assignor of onehalf to Kenneth G. Fraser,Dayton, Ohio Application May 5, 1955, Serial No. 506,239

Claims. (CI. 64-17) This invention relates to pinning construction foruniversal joints, and more particularly to an improved central block andarm construction.

In the construction of universal joints, great difiiculty is oftenexperienced in obtaining central block and arm construction which ispermanent and durable, and which can withstand the conditions ofconstant and heavy use.

An object of the present invention is to provide a pinning constructionwhich is durable, and at the same time is simple and easy to construct,which is composed of a minimum number of parts, and one which willprovide positive and permanent connection between the central block andthe attached arms.

A further object of the invention is the provision of a spring detentattachment between the central block of a universal joint and the armsradiating therefrom, the action of which cannot be reversed, that is,the attachment becomes permanent without further machining.

A further object of the invention is the provision of a pinningconstruction that is easily assembled in a block by snapping the armsinto place.

In the use of the pinning construction of this invention, it is to beunderstood that the device is adapted for use in any position deemeddesirable, but for purposes of clarity, and for understanding thefigures of the drawing as they relate to one another, one particularportion of the device will be referred to as the top, and the remainingportions of the description will be described in this relation.

Other objects and advantages reside in the construction of parts, thecombination thereof and the mode of operation, as will become moreapparent from the following description.

In the drawing, Figure l is a top plan view of the pinning construction.

Figure 2 is a vertical section taken on the line 22 of Figure 1.

Figure 3 is a perspective view.

Referring more in detail to the drawing, a central block is providedupon each of the four of its lateral faces with an outwardly extendingarm. These arms are designated 12, 14, 16 and 18. The inner ends ofthese arms are beveled inwardly at diametrically opposed positions, asshown at 22 in Figure 2, to form substantially rectangular sections. Theedges of these sections are shown at 24 on the arms 16 and 18, and theend of the arm 12 is shown at 20 in Figure 2. The ends of therectangular sections 20 and 24 are provided with undercut notches whichprovide pairs of ears or detents 26 on each of the members 12, 14, 16and 18.

The block member 10 is provided with right angular intersecting boringsterminating at the midportion of each of its four lateral faces, and anannular recessed portion 28 on its top and bottom portions. As clearlyshown in the drawing, a rectangular aperture is punched, or otherwisecut, in the base of each recessed portion 28, the rectangular aperturesproviding an opening from each 2,873,591 Patented Feb. 17, 1959 ice 2recessed portion 28 to the intersecting borings. The margins of the baseadjacent the aperture therein provide lips 30 which are swaged, orotherwise depressed, into the borings, Two pairs of lips 30, there beingtwo lips projecting into each boring, are created in the base of eachrecessed portion 28 in this manner. The lips 30 are adapted to engagewithin the notches in the members 12, 14, 16 and 18, and behind the cars26. Thus, the arms 12, 14, 16 and 18 are retained in place so that theycannot become disengaged from the borings. The connection thus formed ispermanent.

The head 10 may be tempered, and the lips 30 may thus be temperedsprings, ready for a spring engagement behind the ears or detents 26, orthe lips 30 can be swaged into the several notches after the notched armmembers 12, 14, 16 and 18 have been inserted in place.

Although the preferred embodiment of the device has been described, itwill be understood that within the purview of this invention variouschanges may be made in the form, details, proportion and arrangement ofparts, the combination thereof and mode of operation, which generallystated consist in a device capable of carrying out the objects setforth, as disclosed and defined in the appended claims.

Having thus described my invention, I claim:

1. A pinning construction for a universal joint comprising a centralblock provided with two right angularly disposed intersecting borings,said block being provided at its top and bottom surfaces with recesseshaving apertured bases, the apertures in said bases communicating withsaid intersecting borings, the marginal portions of each said baseadjacent the aperture therein being depressed inwardly to provide lipsprojecting into said borings, there being one pair of lips disposed inthe base of each said recess projecting into each said boring, and

a plurality of arms, there being one arm journalled in each of theopposite ends of each said boring and having a portion projecting fromsaid block, each said arm hav' ing notched portions adjacent the inwardends thereof for engaging a pair of said lips, said notched portions andsaid lips cooperating to retain said arms in said block.

2. A pinning construction for universal joints comprising a centralblock having two right angularly disposed intersecting borings therein,means providing an aperture in said block communicating with saidborings, said block having swaged portions adjacent said apertureproviding lips projecting into said borings, there being at least twolips projecting into each said boring, a plurality of arms, there beingone arm journalled in each of the opposite ends of each said boring,each said arm having a notched portion adjacent the inward end thereoffor engaging one of said lips, said lips and said notched portionscooperating to retain said arms in said block.

3. A pinning construction for universal joints comprising a block havinga boring therein, means providing an aperture in said blockcommunicating with said boring, said block having a swaged portionadjacent said aperture providing a lip projecting into said boring, anarm projecting into said boring, said arm having a notched portiondisposed within said boring in engagement with said lip, said notchedportion and said lip cooperating to retain said arm within said block.

4. A pinning construction for universal joints comprising a blockprovided with a plurality of borings, a plurality of arms, there beingone arm journalled in the blockin each said boring, said arms projectingnormally from the lateral faces of said block, means providing anaperture in said block communicating with said borings, said blockhaving swaged portions adjacent said aperture forming lips projectinginto said borings, there being 3 one lip projecting into-eachsaid-boring, each-said arm having a notched portion disposed within saidblock in engagement with one of said lips, said engaged notched portionsand lips cooperating to retain said arms within said block.

5. A pinning construction for universal joints comprising a blockprovided with a plurality of borings, arms disposed in said borings andprotruding from said block, said block having swaged portions projectinginto said borings, anddetent-means integral with said arm engaging theswaged portions of said block for securing said arms in said block.

References Cited in the file of this patent UNITED STATES PATENTS

